Moore P B, Araki T
American Mineralogist 59 (1974) 985-1004
Pinakiolite, Mg2MnO2[BO3]; warwickite, Mg(Mg0.5Ti0.5)O[BO3]; wightmanite,
Mg5(O)(OH)5[BO3].nH2O: Crystal chemistry of complex 3 Angstrom wallpaper
structures
21.79 5.977 5.341 90 95.83 90 C2/m
atom x y z occ Biso
Mn1 .5 .5 0 .73
Mn2 .5 .5 .5 .70
Mn3 .2503 0 .4993 .57
Mg1 .5 0 0 .83 1.95
Mg2 .5 0 .5 .77 2.06
Mg3 .25 .25 0 .84 .60
Mn3 .25 .25 0 .16 .60
Mg4 .3869 .2497 .7072 .99 .64
Fe4 .3869 .2497 .7072 .01 .64
B1 .1344 0 .8055 .57
B2 .3692 0 .1986 .85
O1 .3972 .5 -.0162 .73
O2 .3959 .5 .4344 .65
O3 .1908 0 .8332 .74
O4 .4014 0 -.0166 1.02
O5 .4002 0 .4397 .94
O6 .3058 0 .1713 .89
O7 .5138 .2755 .2556 .92
O8 .2937 .2502 .6775 .76
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